Belimo ZoneTight™ zone valves
Efficient in every way
Belimo ZoneTight™ valves are engineered for maximum efficiency in tight spaces and set new performance standards for both pressure-dependent and pressure-independent zone applications.
The QCV, PIQCV and PIFLV valve-actuator combinations consume 95% less current than conventional zone valves. Impressive tool-free mounting (actuator with valve) simplifies commissioning and reduces labour costs.
Belimo ZoneTight™ control valves ensure permanent and precise control of hydronic systems.
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Video - Thermal actuators vs electro-mechanical rotary actuators
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Technical brochure – Water applications
(pdf -
7.38 MB)
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Flyer – Compact zone valve QCV
(pdf -
1.5 MB)
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Application brochure – Room and zone control
(pdf -
4.85 MB)
HVAC hydronics – the goldmine in building renovation projects.
The smart control of heating, cooling, and ventilation loads has a big impact on the energy efficiency of buildings. A key aspect here is the heating and chilled water circuit, i.e. the hydronics of a building.
Generation
- No energy loss at zero load reduces operating costs.
- Planning reliability as a first step towards better energy efficiency.
Distribution
- Pressure fluctuations in distribution lead to lower power output.
- Making energy flow visible.
Zone
- Demand-driven zone control.
Find out how we can support you in this:
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Brochure – Energy efficiency and comfort in buildings
(pdf -
4.46 MB)
More than an ordinary zone valve
Super compact and versatile
The tight-closing characterised control valve prevents internal leakage in the closed state and thus unwanted consumption at zero load. The self-cleaning effect prevents sticking. Activation of the chilling or heating power is reliable and only in case of need.
The ZoneTight™ characterised control valve guarantees equal percentage flow characteristics. The stability of control achieved in this manner reliably reduces the tendency of the chilling or heating system to oscillate. This ensures that optimum comfort with the least possible use of energy is achieved. Available with dew point management for early detection of condensation.
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Application brochure – Room and zone control
(pdf -
4.85 MB)
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Notes for project planning – Belimo ZoneTight™ (QCV)
(pdf -
1.43 MB)
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Notes for project planning – 6-way characterised control valves
(pdf -
1.11 MB)
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Video - Why choose the Belimo Quick Compact Valve (QCV)?
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Video - Ball Valve vs. Short Stroke Valve
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Video - Setting the kvs value
Product range
8 reasons for using 6-way valves
1. One device for everything
- Compact construction
- Less weight
- Reduced effort at the time of installation
- Reduced installation costs
2. Transparent, pressure-independent control
- Manual hydronic balancing of the heating and cooling system is dispensed with, quick to configure
- The correct amount of water is ensured, even with differential pressure changes and in partial load operation
3. Simple, time-saving commissioning
- The Belimo Assistant App allows easy commissioning and maintenance
- The 6-way zone valve EPIV offers de-energised parametrisation via smartphone prior to installation
4. Safe, precise and no condensation
- Elimination of possibility of installation errors caused by mixing up the valves
- Simultaneous switch-on of cooling and heating is prevented
- Precise, dirt-resistant fl ow contro
5. Simple, future-proof integration
- Integration via MP-Bus from Belimo, BACnet MS/TP, Modbus or conventional
- Optimised pump operation can be ensured
- Energy-efficient system operation is guaranteed over the entire service life
6. Reduced energy consumption
- No holding torque is necessary to maintain the set valve position
- The patented actuator control system features dynamic holding force detection
- Annual actuator energy consumption can be reduced by up to 57%
7. Excellent control characteristics with minimum effort
- Only one electrical connection and one data point
- The desired flow rate is automatically maintained
- The control is pressure-independent in flow control mode
- Installation effort and sources of error are reduced to a minimum
8. Air-bubble tight with maximum plant safety
- Air-bubble tight – no leakage in the closed position
- The 6-way characterised control valves have an integrated pressure release function
- No blockade by dirt particles possible
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Brochure – 8 reasons for using 6-way valves
(pdf -
3.36 MB)
Advantages of Belimo characterised control valves
1. Absolute seal integrity
- All-in-one: Control valve and isolation valve
- No activation and no energy loss at zero load
2. Optimum flow characteristic
- Excellent control stability and reduced oscillating tendency
- Best possible comfort
3. Excellent control characteristics
- High rangeability
- Superior controllability in the opening range
4. No holding torque necessary
- Simpler selection of actuators
- Actuator size not dependent on differential pressure
- Inexpensive and energy-efficient actuators
5. Reduced weight
- Simple material transport to and at the installation site
- Fast installation
- Reduced installation costs
6. Low installation height
- Reduced space requirements, thereby increased freedom of design
- Easy planning and simple installation
7. Reduced energy consumption
- Low power consumption saves energy costs
- Less expensive electrical installation
8. Self-cleaning spherical design
- No jamming, maintenance-free, high operating safety
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Brochure - 8 reasons to use a characterised control valve
(pdf -
2.41 MB)
PreFIX – more than standard.
Custom-made products. Less effort, more profit.
These days, challenges in planning and on the construction site are difficult to solve using standard products, which is why pre-manufactured products are becoming increasingly important. We build the actuator you need – with the cable length, connector plug and parametrisation you specify. On request, we mount the actuator to a valve and create a pre-mounted assembly from pipe parts, sensors, connections and much more.
- Different cable types and lengths with or without a connector plug.
- Product labelling with your customer information (e.g. where the actuator is to be installed in the building).
- Completely prefabricated and tested assembly (e.g. seal integrity) with components of your choice.
- On request with flexible pipelines, with special coatings or insulation.
- We take care of the parametrisation for you (e.g. adjustable running time, switching differential and bus parameters). For HVAC performance devices (e.g. Belimo Energy Valve™), we prepare the complete commissioning for you according to your specifications.
We offer a "complete carefree package" for your application.
- Customer advantages
- Software / Plug-ins
- Success stories
- Awards
General contractors / investors
Your focus is on the profitability of buildings. This not only includes investment costs, but also costs during ongoing operation / servicing. Sustainability and cost transparency are important to you. Belimo zone valves offer:
- Tested quality for over 40 years
- 95% less current consumption than conventional zone valves, which contributes to LEED certification
- Tight-closing characterised control valves prevent valve leakages and thereby energy losses
- A high level of room comfort and satisfied building users as a result
- 5-year guarantee on all Belimo products
Consulting engineers
Planning HVAC systems is your core competence. You are constantly on the lookout for new, innovative ways to save energy and improve room climate. You work with the most modern methods and use data from suppliers / manufacturers for your planning. Belimo zone valves offer:
- Tight-closing with 95% less current consumption than conventional zone valves, which contributes to LEED certification
- Pressure-independent valve acts as a balancing valve and control valve in a single unit, reducing mounting and balancing costs
- Smallest pressure-independent valve on the market
- Specially coordinated planning aids and documents support day-to-day work
System integrators
Your task is to design building management systems and optimally integrate field devices. Your goal is to reduce complexity and ensure transparency for the continuous optimisation of building technology. Belimo pressure-independent characterised control valves offer:
- Easy selection, installation, and hassle-free service
- Assembled with rotary actuators offering easy on-site mounting and installation saving you time
- Control via BACnet, Modbus, KNX, MP-Bus or analogue signal depending on the actuator
Installers / plant engineers
The installation of HVAC building technology is your trade. To carry out your work, you need the right products at the right time on site. Easy mounting and expert customer support allow you to meet your tight schedule. Belimo zone valves offer:
- Compact design for easy mounting in tight spaces
- Kvs or Vnom values can be adjusted on-site to meet design requirements and reduce inventory levels
- Possibility to operate as a balancing valve and control valve in one unit (PIQCV), reducing installation and balancing costs
- Fast delivery with extensive support
Building owners
Improvements in comfort and energy consumption as well as simple building expansions and upgrades are a constant challenge for you. Optimising your HVAC system with the least possible effort and low costs is in the main focus. Belimo zone valves offer:
- Zero leakage and high isolation pressure eliminates energy loss and improves system performance
- Reduces operating costs by consuming 95% less current than conventional zone valves
- Simple adaptations can be made to changes in performance, thereby also guaranteeing easy building conversion
- System safety guaranteed by optional fail-safe
Facility managers / Building maintenance
Management, control and operation of buildings and their technical equipment is part of your daily tasks. You seek solutions to ensure room comfort and optimise system operation. You value simple and transparent systems and, if necessary, quick delivery of spare parts and support available at all times. Belimo zone valves offer:
- Maintenance-free, self-cleaning ball valve technology provides excellent protection against dirt and clogging
- 95% less current consumption than conventional zone valves
- Flow (Kvs, Vmax) can be adjusted on-site and helps reduce inventory levels
- Maximum comfort with minimum operating costs throughout the entire life cycle
- No unwanted power output thanks to air-bubble tight valves
- Fast delivery with extensive support
Belimo Assistant 2
Unlock the full potential of your Belimo devices
Belimo Assistant 2 enables wired and wireless setup, on-site operation, and troubleshooting of Belimo damper actuators, control valves, sensors, and meters with smartphones, tablets, and PCs.
Key features:
- Check and modify device setting parameters
- Display identification data: Device type, position, designation, serial number, bus address
- Addressing (MP-Bus, BACnet, Modbus, TCP/IP)
- "Setup": Guided parameter setup for your device.
- "Copy/Paste Configuration": Replicate settings for the same device types
- "Live trend": Perform local override and live trending with the easy-share function
- "Health": Monitor device operation KPIs. E.g. Power supply, Bus state, Sensor state, etc.
- "Reports": Retrieve digital reports of your device with the easy-share function. E.g. Calibration certificate, Commissioning report
- "Export Configuration": Create a logfile with the easy-share function
- In-app language adjustment (EN/DE/FR/IT/ES/CN/RU)
- Platform-independent for Android, Apple iOS, and Windows.
Accessories:
- ZTH EU (USB/MP converter)
- ZIP-BT-NFC (Bluetooth/NFC converter)
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App Store
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Google Play
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Belimo Assistant 2 (Windows Installer Version 6.10.0)
(msi -
84.42 MB)
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Quick Guide – Belimo Assistant 2
(pdf -
1.89 MB)
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Flyer – Belimo Assistant 2
(pdf -
1.66 MB)
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Frequently asked questions
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How-To Videos
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Learn more about Belimo Assistant 2
Belimo RetroFIT+ App
The Belimo RetroFIT+ App offers you a quick and easy way to find the perfect replacement for your obsolete or defective actuators, valves and sensors from Belimo and a number of other equipment sources.
Whether it be for ventilation or water applications, for modernisation or for replacing your system – our app will quickly lead you to the ideal Belimo product which best fulfils your requirements while at the same time offering you maximum quality and performance.
The RetroFIT+ App makes it easy to create and plan Belimo retrofit projects.
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How to find a replacement with Belimo RetroFIT+ App.
Service Tool ZTH EU
The ZTH EU service tool simplifies diagnosis, operational checking and setting for HVAC performance devices. Connected directly to a parametrisable or communicative actuator from Belimo, current values can be read on site and reset immediately.
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Download Tool - ZTH EU - Firmware Upgrade
(zip -
2.44 MB)
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Operating manual - ZTH EU Firmware Upgrade
(pdf -
304 KB)
When using the ZTH EU as an interface for the PC-Tool (MFT-P), the corresponding USB driver is installed when the PC-Tool software is installed. The driver can also be downloaded here and installed separately.
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ZTH EU - USB MP driver
(zip -
2.17 MB)
BIM plug-in for Autodesk Revit
3D data models with technical information from Autodesk Revit via the BIM plug-in
This plug-in allows you to select Belimo actuators, valves and sensors from one database and then add them to the building information modelling project with their technical data via drag & drop. All BIM users thus have access to all data in a structured and classified form in the Revit MEP format.
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Plugin 3Dfindit: Versions Revit 2021 - Revit 2025
(zip -
404.75 MB)
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Flyer – Efficient planning with BIM
(pdf -
1.91 MB)
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The BIM plug-in can only be successfully installed if the Autodesk Revit software is available on the computer.
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Visit the Autodesk page
Awards and recognitions
The Belimo Energy Valve™ has received many technological innovation awards for its low delta T syndrome solution and for creating transparency in the visualisation of product and system performance at the field device level of the system operation. The Belimo Energy Valve™ is unique in the market.